Merge

8156073: 2-slot LiveStackFrame locals (long and double) are incorrect Reviewed-by: coleenp, mchung

8173373: C1: NPE is thrown instead of LinkageError when accessing inaccessible field on NULL receiver Summary: Deoptimize if receiver null check of unresolved field access fails to throw NoClassDefFoundError instead of NPE. Reviewed-by: vlivanov

8173338: C2: continuous CallSite relinkage eventually disables compilation for a method Reviewed-by: jrose, dlong, kvn